soften Antonyms

sharpen harden scuff toughen trouble upset vitrify worry add to argle-bargle toughening tingle temper season set solidifying solidify stiffening stiffen strengthen stress fossilise demulsify turn up be furious drive someone up a wall make someone see red add to the problem argybargy be enraged be in a huff be in rage become tighter be angry quick-freeze amp up argie bargie argol-bargol have a cow drive someone up the wall get someone's back up get someone's dander up overstretch put someone's back up be in deep water salting abound concreted congeal congealment